Monodox

To reduce the development of drug-resistant bacteria and
maintain the effectiveness of Monodox and other antibacterial drugs, Monodox
should be used only to treat or prevent infections that are proven or strongly
suspected to be caused by bacteria.

What are the precautions when taking doxycycline (Monodox)?

See also Side Effects section.

Before taking doxycycline, tell your doctor or pharmacist if you are allergic to it; or to other tetracyclines (such as minocycline); or if you have any other allergies. This product may contain inactive ingredients (such as sulfites, soy found in some brands), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.